(x-20)+2x=90

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Solution for (x-20)+2x=90 equation: 



(x-20)+2x=90

We move all terms to the left:

(x-20)+2x-(90)=0

We add all the numbers together, and all the variables

2x+(x-20)-90=0

We get rid of parentheses

2x+x-20-90=0

We add all the numbers together, and all the variables

3x-110=0

We move all terms containing x to the left, all other terms to the right

3x=110

x=110/3

x=36+2/3

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